.post_btn_wrap{width:57px;height:57px;position:fixed;right:0;bottom:0;}
.post_btn_menu{
	width:57px;height:57px;background:orange;position:absolute;bottom:60px;right:2px;z-index:10;cursor:pointer;
	border-radius:100%;
	-moz-border-radius:100%;
	opacity:0.7;
	font-size:30px;
	color:#fff;
	text-align:center;
	line-height:57px;
}
.post_btn_wrap .is_choose{
	color:red;
}
.post_btn{
	width:52px;
	height:52px;
	background:orange;
	border-radius:100%;
	-moz-border-radius:100%;
	opacity:0.3;
	font-size:15px;
	color:#fff;
	text-align:center;
	line-height:52px;
	z-index:1;position:absolute;bottom:60px;right:0;margin:0 5px 2px 0;cursor:pointer;
}
.btn1.close, .btn2.close, .btn3.close, .btn4.close{bottom:60px;right:0;}
.btn1.open{bottom:175px;right:0;opacity:0.8;}
.btn2.open{bottom:150px;right:62px;opacity:0.8;}
.btn3.open{bottom:105px;right:112px;opacity:0.8;}
.btn4.open{bottom:48px;right:135px;opacity:0.8;}
.post_btn{
	-webkit-transition:bottom .2s,right .2s;-moz-transition:bottom .2s,right .2s;-o-transition:bottom .2s,right .2s;-ms-transition:bottom .2s,right .2s;transition:bottom .2s,right .2s;
}